Using roi functions while zoomed in on a Figure (Matlab)

Question

I'm writing a program that lets users do 2D Fourier filtering of an image. The image is displayed in a Figure and the user can add masks using imellipse and roipoly functions that are applied to the frequency domain data.

The question: is it possible to use imellipse and roipoly while zoomed in on the Figure?

I've tried zooming in and using the two function, but it just zooms out and makes filtering DC frequencies really tough. If imellipse and roipoly are on and Zoom is selected, I can't get the functions back. Googling didn't turn up anything.

Version: 2013b

Thanks in advance!

Answer 1

I do the following with imcrop routinely, and I just verified it with imellipse:

1. Click the Zoom In toolbar button (notice it stays selected and you will have a magnifying glass mouse pointer).
2. Zoom into a region of the image.
3. Click the Zoom In toolbar again (you will get the normal arrow pointer back). This is the important part. The image will stay zoomed.
4. Run imellipse, etc..